User interface for a portion of a display screen



The enclosed FIGURE is a front view of a user interface for a portion ofa display screen showing the new design.

The broken line showing the display screen is for illustrative purposesonly and forms no part of the claimed design. The shading below each ofthe rectangles represents a faded reflective shadow of a lower portionof its corresponding rectangle.

The ornamental design for a user interface for a portion of a displayscreen, as shown and described.